Association between Peritonsillar Abscess and Molar Caries

Peritonsillar abscess is the most common deep neck infections that are related with periodontal diseasewhich has the same pathogenesi s. we determined the relationship between peritonsillar infection and molar caries.methods: in a cross-sectional study , 33 conseeutive patients whom referred to hamadan university clinic ofotolaryngologic for peritonsillar abscess were examined by otolaryngologist and denti st who investigated relation shipbetween periton sillar infection and molar caries.results: there were 27 males and 6 females with mean age 26.7+_7 years. the frequ ency caries on ipsilateral perit onsillarinfection sides was in relation to molars caries on opposite sides (conterol group). this corrolation was significant with oddsratio 2.5.conclusion: molar caries were seen 2.5 times more likely to have peritonsillar infection compared with normal molarsides.